Frank's place is absolutely wonderful and given the cost - it's a steal! Great location. Straightforward access to the airport (about a 45 minute subway ride). Close to great food options and the pier to take the boat to the temples. Very residential area with lots of schools nearby - so it doesn't have the same touristy feel as other parts of the city. Frank is also incredibly communicative and provides an excellent guide book to help you navigate the neighborhood. The space is very minimalist but perfect for one or two people. We did have a slight problem with ants but it's to be expected in Bangkok. If you do take the train, just be prepared for about a 10-12 minute walk from the station. 100% worth the money.